Add dummy interface

src/CONFIG_STREAM

@@ -30,6 +30,8 @@ SYNAPPS_RECORDS += scalcout
 # asynDriver interface is added automatically
 # if ASYN is defined in your RELEASE file.
 # BUSSES += Debug
+BUSSES += Debug
+BUSSES += Dummy
 
 # You may add more format converters
 # This requires the naming convention

src/DummyInterface.cc

@@ -0,0 +1,76 @@
+/***************************************************************
+* StreamDevice Support                                         *
+*                                                              *
+* (C) 2011 Dirk Zimoch (dirk.zimoch@psi.ch)                    *
+*                                                              *
+* This is the interface to a "dummy" bus driver for            *
+* StreamDevice. It does not provide any I/O functionality.     *
+*                                                              *
+* If you do any changes in this file, you are not allowed to   *
+* redistribute it any more. If there is a bug or a missing     *
+* feature, send me an email and/or your patch. If I accept     *
+* your changes, they will go to the next release.              *
+*                                                              *
+* DISCLAIMER: If this software breaks something or harms       *
+* someone, it's your problem.                                  *
+*                                                              *
+***************************************************************/
+
+#include "StreamBusInterface.h"
+#include "StreamError.h"
+#include "StreamBuffer.h"
+
+class DummyInterface : StreamBusInterface
+{
+    DummyInterface(Client* client);
+
+    // StreamBusInterface methods
+    bool lockRequest(unsigned long lockTimeout_ms);
+    bool unlock();
+
+protected:
+    ~DummyInterface();
+
+public:
+    // static creator method
+    static StreamBusInterface* getBusInterface(Client* client,
+        const char* busname, int addr, const char* param);
+};
+
+RegisterStreamBusInterface(DummyInterface);
+
+DummyInterface::
+DummyInterface(Client* client) : StreamBusInterface(client)
+{
+    // Nothing to do
+}
+
+DummyInterface::
+~DummyInterface()
+{
+    // Nothing to do
+}
+
+StreamBusInterface* DummyInterface::
+getBusInterface(Client* client,
+    const char* busname, int addr, const char*)
+{
+    if (strcmp(busname, "dummy") == 0)
+    {
+        DummyInterface* interface = new DummyInterface(client);
+        return interface;
+    }
+    return NULL;
+}
+
+bool DummyInterface::
+lockRequest(unsigned long lockTimeout_ms)
+{
+    return false;
+}
+
+bool DummyInterface::
+unlock()
+{
+    return false;
+}